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Wire rope use, maintenance, maintenance system

Wire rope in the daily use of the process in strict accordance with the following requirements for the use of wire rope, maintenance and repair

1. The wire rope should be properly opened. When the wire rope is opened, avoid the kink , the strength is reduced so that it is bad. When the wire rope is cut, it is tightened to prevent loose.

2. Wire rope can not be overloaded, can not work under the impact load, the work should be smooth.

3. Do not contact the wire rope with the wire, so as not to be damaged or electric shock occurred. Close to high temperature objects, to take insulation measures.

4. Wire rope in use should avoid kink, once kink, should immediately shake straight. Use should minimize the number of bending, and try to avoid reverse bending.

5. Wire rope should be protected from wear, corrosion or other physical conditions, chemical conditions caused by reduced performance. Lifting the melting and hot metal wire rope, there must be to prevent high temperature damage measures.
6. Before use, according to the use of the appropriate choice of diameter wire rope; in the course of the use of the load to check the capacity and damage; use after the timely maintenance, proper storage.

Second, the wire rope safety inspection

The inspection section of the wire rope is divided into daily inspection, periodic inspection and special inspection. The daily inspection is self-test. The periodic inspection is based on the type of device, the utilization rate, the environment and the last inspection. The contents and requirements of the wire rope are shown in the table below. Specific test methods are as follows:

① inspection should pay attention to the location of broken wire (such as far from the end) and the concentration of broken wire to determine the treatment method.

② attention to the location and shape of broken wire, that is, broken wire occurred in the protruding parts of the rope, or valley parts. According to the shape of broken wire, you can determine the reasons for broken wire.

(2) wear. The wear test is mainly the measurement of wear state and diameter.

There are two types of wear: one is communication wear and the other is eccentric wear. Eccentric wear of the majority of wire rope occurred in the rope is not the amount of movement, spreader heavier, large changes in the occasion of the tension. For example, the lifting rope of an electromagnetic sucker crane is prone to such wear. Eccentric wear and communication wear also reduce the strength of the wire rope.

(3) corrosion. Corrosion has both external corrosion and internal corrosion.

External corrosion of external corrosion test: visual rope rust, pitting, wire loosening state. Erosion is not easy to test. Internal corrosion is not easy to test. If it is a smaller diameter wire rope (≤ 20mm), you can use the handle to bend the wire rope to test; If the diameter is large, the wire can be used to insert the wire for internal inspection, after the test to restore the original wire rope, careful not to damage the rope, and coated with grease.
(4) deformation of the wire rope knot, wave, flat, etc. for visual inspection. Wire rope should not knot, nor should there be a large wave deformation.
(5) the impact of arc and roasted visual wire rope, there should be no temper package, there should be no welding injury. Welding should be broken wire processing.
(6) steel wire rope lubrication test wire rope should be in a good lubrication state.According to the experiment, the lubrication of a good wire rope in a twist within the wire from the wire to 10% of the total number of silk, with fatigue tests and repeated bending up to 48500 times, and no lubrication of the same specifications of the wire rope is only 22,500 times, so it is important of lubrication.